PetSafe Boundary Flags, Bundle of 50 (100-Pack) Go to amazon.com Related posts How to find the best underground fence flags for 2022? Feature2 Packs of 50 flags each. Total of 100 flagsHelps to visualize the bounds of the area where the training takes placeEasily visible DescriptionBoundary Flags are to be used as a visual aid for your pet to help them learn the boundary you've determined for them.